diff --git a/tests/wpt/metadata/FileAPI/blob/Blob-array-buffer.any.js.ini b/tests/wpt/metadata/FileAPI/blob/Blob-array-buffer.any.js.ini
index aff6150a13b..a9548bac2f9 100644
--- a/tests/wpt/metadata/FileAPI/blob/Blob-array-buffer.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/blob/Blob-array-buffer.any.js.ini
@@ -11,6 +11,9 @@
   [Blob.arrayBuffer() empty Blob data]
     expected: FAIL
 
+  [Blob.arrayBuffer() concurrent reads]
+    expected: FAIL
+
 
 [Blob-array-buffer.any.worker.html]
   [Blob.arrayBuffer() non-unicode input]
@@ -25,3 +28,6 @@
   [Blob.arrayBuffer() empty Blob data]
     expected: FAIL
 
+  [Blob.arrayBuffer() concurrent reads]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/FileAPI/blob/Blob-stream.any.js.ini b/tests/wpt/metadata/FileAPI/blob/Blob-stream.any.js.ini
index c827cd7661f..facf4573cb3 100644
--- a/tests/wpt/metadata/FileAPI/blob/Blob-stream.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/blob/Blob-stream.any.js.ini
@@ -8,6 +8,9 @@
   [Blob.stream() non-unicode input]
     expected: FAIL
 
+  [Blob.stream() garbage collection of blob shouldn't break streamconsumption]
+    expected: FAIL
+
 
 [Blob-stream.any.html]
   [Blob.stream() empty Blob]
@@ -19,3 +22,6 @@
   [Blob.stream() non-unicode input]
     expected: FAIL
 
+  [Blob.stream() garbage collection of blob shouldn't break streamconsumption]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/FileAPI/blob/Blob-text.any.js.ini b/tests/wpt/metadata/FileAPI/blob/Blob-text.any.js.ini
index 1038fd55d04..aa09d7ecbe6 100644
--- a/tests/wpt/metadata/FileAPI/blob/Blob-text.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/blob/Blob-text.any.js.ini
@@ -20,6 +20,9 @@
   [Blob.text() empty blob data]
     expected: FAIL
 
+  [Blob.text() concurrent reads]
+    expected: FAIL
+
 
 [Blob-text.any.worker.html]
   [Blob.text() different charset param in type option]
@@ -43,3 +46,6 @@
   [Blob.text() empty blob data]
     expected: FAIL
 
+  [Blob.text() concurrent reads]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
index 3b874fc1748..3a3d15b8406 100644
--- a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
@@ -14,6 +14,9 @@
   [Revoke blob URL after creating Request, will fetch]
     expected: FAIL
 
+  [Revoke blob URL after calling fetch, fetch should succeed]
+    expected: FAIL
+
 
 [url-with-fetch.any.html]
   [Untitled]
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 09fb70cf5d7..02d83856b52 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -133177,6 +133177,18 @@
      {}
     ]
    ],
+   "css/css-position/position-sticky-change-top.html": [
+    [
+     "css/css-position/position-sticky-change-top.html",
+     [
+      [
+       "/css/css-position/position-sticky-change-top-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-position/position-sticky-child-multicolumn.html": [
     [
      "css/css-position/position-sticky-child-multicolumn.html",
@@ -206136,11 +206148,6 @@
      {}
     ]
    ],
-   "animation-worklet/worklet-animation-duration-ref.html": [
-    [
-     {}
-    ]
-   ],
    "animation-worklet/worklet-animation-local-time-after-duration-ref.html": [
     [
      {}
@@ -272246,6 +272253,11 @@
      {}
     ]
    ],
+   "css/css-position/position-sticky-change-top-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-position/position-sticky-child-multicolumn-ref.html": [
     [
      {}
@@ -326991,311 +327003,6 @@
      {}
     ]
    ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/CompositionEvent.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.attrChange.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.attrName.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.newValue.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.prevValue.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.relatedNode.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMCharacterDataModified.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMNodeInserted.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMNodeRemoved.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/DOMSubtreeModified.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/Event.defaultPrevented.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/Event.eventPhase.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/Event.stopPropagation.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.key.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.location.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.modifiers.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.button.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.image.map.area.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.preventDefault.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.hasFeature.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.initMutationEvent.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.relatedNode.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/ProcessingInstruction.DOMCharacterDataModified.fail.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/ProcessingInstruction.DOMCharacterDataModified.xml": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.hasFeature.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.initTextEvent.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.IME.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.drop.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.keyboard.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.paste.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.script.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/UIEvent.load.stylesheet.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.Capture.Bubble.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.ctrlKey.zoom.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.deltaMode.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.hasFeature.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.initWheelEvent.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.preventDefault.scroll.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/abort.img.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/abort.testresult.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/blur.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.data.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.keydown.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.preventDefault.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/converted/support/ProcessingInstruction.DOMCharacterDataModified.xml": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/dispatchEvent.click.checkbox.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/error.image.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/focusin.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/focusin.relatedTarget.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/focusout.relatedTarget.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/hasFeature.Events.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/hasFeature.feature.string.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/load.image.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/mouseenter.ctrlKey.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/mouseenter.relatedTarget.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/mouseleave.relatedTarget.html": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/support/16kb.js": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/support/InvalidBitMap.png": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/support/iepreview.png": [
-    [
-     {}
-    ]
-   ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/support/style01.css": [
-    [
-     {}
-    ]
-   ],
    "uievents/order-of-events/README.md": [
     [
      {}
@@ -337877,6 +337584,10 @@
        [
         "script",
         "../support/Blob.js"
+       ],
+       [
+        "script",
+        "../../streams/resources/test-utils.js"
        ]
       ]
      }
@@ -337892,6 +337603,10 @@
        [
         "script",
         "../support/Blob.js"
+       ],
+       [
+        "script",
+        "../../streams/resources/test-utils.js"
        ]
       ]
      }
@@ -347669,6 +347384,12 @@
      {}
     ]
    ],
+   "animation-worklet/worklet-animation-without-target.https.html": [
+    [
+     "animation-worklet/worklet-animation-without-target.https.html",
+     {}
+    ]
+   ],
    "apng/supported-in-source-type.html": [
     [
      "apng/supported-in-source-type.html",
@@ -393760,6 +393481,12 @@
      {}
     ]
    ],
+   "html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml": [
+    [
+     "html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml",
+     {}
+    ]
+   ],
    "html/semantics/forms/textfieldselection/textfieldselection-setRangeText.html": [
     [
      "html/semantics/forms/textfieldselection/textfieldselection-setRangeText.html",
@@ -401045,6 +400772,12 @@
      {}
     ]
    ],
+   "intersection-observer/v2/inline-occlusion.html": [
+    [
+     "intersection-observer/v2/inline-occlusion.html",
+     {}
+    ]
+   ],
    "intersection-observer/v2/scaled-target.html": [
     [
      "intersection-observer/v2/scaled-target.html",
@@ -401069,6 +400802,12 @@
      {}
     ]
    ],
+   "intersection-observer/v2/text-editor-occlusion.html": [
+    [
+     "intersection-observer/v2/text-editor-occlusion.html",
+     {}
+    ]
+   ],
    "intersection-observer/v2/text-shadow.html": [
     [
      "intersection-observer/v2/text-shadow.html",
@@ -401375,6 +401114,12 @@
      {}
     ]
    ],
+   "lifecycle/child-out-of-viewport.tentative.html": [
+    [
+     "lifecycle/child-out-of-viewport.tentative.html",
+     {}
+    ]
+   ],
    "lifecycle/freeze.html": [
     [
      "lifecycle/freeze.html",
@@ -438723,12 +438468,6 @@
      {}
     ]
    ],
-   "uievents/legacy-domevents-tests/submissions/Microsoft/converted/EventListener.dispatch.new.event.html": [
-    [
-     "uievents/legacy-domevents-tests/submissions/Microsoft/converted/EventListener.dispatch.new.event.html",
-     {}
-    ]
-   ],
    "uievents/legacy/Event-subclasses-init.html": [
     [
      "uievents/legacy/Event-subclasses-init.html",
@@ -444182,6 +443921,12 @@
      {}
     ]
    ],
+   "webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html": [
+    [
+     "webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html",
+     {}
+    ]
+   ],
    "webaudio/the-audio-api/the-delaynode-interface/ctor-delay.html": [
     [
      "webaudio/the-audio-api/the-delaynode-interface/ctor-delay.html",
@@ -444320,6 +444065,12 @@
      {}
     ]
    ],
+   "webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html": [
+    [
+     "webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html",
+     {}
+    ]
+   ],
    "webaudio/the-audio-api/the-offlineaudiocontext-interface/ctor-offlineaudiocontext.html": [
     [
      "webaudio/the-audio-api/the-offlineaudiocontext-interface/ctor-offlineaudiocontext.html",
@@ -475534,7 +475285,7 @@
    "support"
   ],
   ".gitignore": [
-   "0f080ca986bcf8f3394385c0f5c257073ca94551",
+   "60d06876d962c726907f0bc0d5d46e1ae5382875",
    "support"
   ],
   ".gitmodules": [
@@ -479962,7 +479713,7 @@
    "support"
   ],
   "FileAPI/blob/Blob-array-buffer.any.js": [
-   "b72427fd5cfaf60ab665eb30e31a4654c4169d01",
+   "2310646e5fdeab300bcea66e4035adbdf3651685",
    "testharness"
   ],
   "FileAPI/blob/Blob-constructor-endings.html": [
@@ -479986,11 +479737,11 @@
    "testharness"
   ],
   "FileAPI/blob/Blob-stream.any.js": [
-   "894f09f8ece47cab1301b8b474285204a4b7c4f1",
+   "bd4f8dc40bca12eb10a2f471dee417d3e31075a0",
    "testharness"
   ],
   "FileAPI/blob/Blob-text.any.js": [
-   "960c96054627fce66631f7bf59516cc6797d8521",
+   "d04fa97cffe6a3d81f520f7ac92ac44e699fa004",
    "testharness"
   ],
   "FileAPI/file/File-constructor-endings.html": [
@@ -483562,15 +483313,11 @@
    "reftest"
   ],
   "animation-worklet/worklet-animation-creation.https.html": [
-   "02886c444dc6c1d68afed9ee6c130b2f85b25240",
+   "5d033b30099dc34017f54d0a3afd10278bbb31a6",
    "testharness"
   ],
-  "animation-worklet/worklet-animation-duration-ref.html": [
-   "81b01bdca813caccb4a3b5e635db21d4f9411a63",
-   "support"
-  ],
   "animation-worklet/worklet-animation-duration.https.html": [
-   "1526004eaf17d5e420e3989a91ba49bc61f4b704",
+   "1a8afc1e89278d06572e337965a6d1ff1572d0d9",
    "testharness"
   ],
   "animation-worklet/worklet-animation-local-time-after-duration-ref.html": [
@@ -483677,6 +483424,10 @@
    "000517162af20406e39831afc0b6cefa0b367f2c",
    "reftest"
   ],
+  "animation-worklet/worklet-animation-without-target.https.html": [
+   "bfb6b4faee4ea6db233c1ca825e786bc9eafc4bf",
+   "testharness"
+  ],
   "annotation-model/.editorconfig": [
    "842ce7b6bf1386ff997f7c2f2baf3c3819a4967f",
    "support"
@@ -487114,7 +486865,7 @@
    "support"
   ],
   "common/security-features/resources/common.js": [
-   "782e428c66f80b94b289a9cce5d6fec0498ef564",
+   "2b4349d24e56c6e8ae325aae2a18b874a7006db8",
    "support"
   ],
   "common/security-features/scope/document.py": [
@@ -597729,6 +597480,14 @@
    "ba23f0145cf497c4d21b36f387d2017acf45bf34",
    "testharness"
   ],
+  "css/css-position/position-sticky-change-top-ref.html": [
+   "8ccc1548ef6abcd82b04e242a747228e47cffd75",
+   "support"
+  ],
+  "css/css-position/position-sticky-change-top.html": [
+   "054a8a610d968a6743bd3c2634b2f7226bdaec0e",
+   "reftest"
+  ],
   "css/css-position/position-sticky-child-multicolumn-ref.html": [
    "c44f9f43eb51df8a8499a53db3d7c47d76f38829",
    "support"
@@ -642274,7 +642033,7 @@
    "support"
   ],
   "docs/_running-tests/safari.md": [
-   "e81383d498c57af0a64b05947e04bbaa2928efc5",
+   "89f329a2986b381d4560fb39124a57afd944f86e",
    "support"
   ],
   "docs/_writing-tests/ahem.md": [
@@ -664389,6 +664148,10 @@
    "bdf52a77f873069e2e49972e4ea484555f59975b",
    "testharness"
   ],
+  "html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml": [
+   "57326bb4a80d26ac109db1fbef9015fda1b31b54",
+   "testharness"
+  ],
   "html/semantics/forms/textfieldselection/textfieldselection-setRangeText.html": [
    "66b5e30a04e7734c211ee2df391d44b678e8ecf1",
    "testharness"
@@ -671789,6 +671552,10 @@
    "3e53ee5f5814e8ef69d8454011ceafabfe8d1f17",
    "testharness"
   ],
+  "intersection-observer/v2/inline-occlusion.html": [
+   "e4b097e62ae3902cb971dba751d496685c566bf6",
+   "testharness"
+  ],
   "intersection-observer/v2/scaled-target.html": [
    "f48f0792d0fab626101f8a612a8c1108401134c7",
    "testharness"
@@ -671805,6 +671572,10 @@
    "ea1ee31ebe4519f9563987934c1a9db7fac77136",
    "testharness"
   ],
+  "intersection-observer/v2/text-editor-occlusion.html": [
+   "2edb7bbbe65ab2d09ae13b38b98d66a2d790b1ff",
+   "testharness"
+  ],
   "intersection-observer/v2/text-shadow.html": [
    "c6445c514eecaf978e95d75f5d37a1387939c5e2",
    "testharness"
@@ -672046,7 +671817,11 @@
    "support"
   ],
   "lifecycle/child-display-none.tentative.html": [
-   "f76b4e7b608d3e4e97dfac100bee6fa63602e0bb",
+   "d4ca6dab1e068703c1b5e94e22b8cb31f786879f",
+   "testharness"
+  ],
+  "lifecycle/child-out-of-viewport.tentative.html": [
+   "4d8f868bfb55043b4b65a93cd7f8e282dcf12f79",
    "testharness"
   ],
   "lifecycle/freeze.html": [
@@ -672074,7 +671849,7 @@
    "reftest"
   ],
   "lint.whitelist": [
-   "0ec256a7525fd32851aa7d251e3ae38fcb2b2436",
+   "a7a4600d9cdceb5df65422ca08404d44df7c9989",
    "support"
   ],
   "loading/preloader-css-import-no-quote.tentative.html": [
@@ -695018,7 +694793,7 @@
    "support"
   ],
   "resource-timing/resources/nested-contexts.js": [
-   "0c202243702aec81426a2dfbca05ce1118c5978b",
+   "07ef33851b012599f2a0103636b3f7db669af881",
    "support"
   ],
   "resource-timing/resources/nested.css": [
@@ -695030,15 +694805,15 @@
    "support"
   ],
   "resource-timing/resources/object-navigate-back.html": [
-   "64e5f584731fdf5fe89e8e60e19fea6bd0f24125",
+   "df32ab0c19956164582ac41265ecb33ad5bae87c",
    "support"
   ],
   "resource-timing/resources/object-navigate.html": [
-   "cbb862e7e00fcb7391107fdfe7e7870388f62a4a",
+   "3ae39c8bc44fa78f26646b64d8cd4dae1f3f07fb",
    "support"
   ],
   "resource-timing/resources/object-refresh.html": [
-   "b14cf7f17c9d807eaa904f92d170e9ee96435464",
+   "9e43e19de19fc7c364e68e0b2415963f55e9ddb2",
    "support"
   ],
   "resource-timing/resources/resource_timing_test0.css": [
@@ -701638,7 +701413,7 @@
    "support"
   ],
   "streams/resources/test-utils.js": [
-   "871ab49fa81dbf674efcda94de57bba936f4f87b",
+   "5a9e2479faadf6bacfd95849f4eb6b013d45a8af",
    "support"
   ],
   "streams/transform-streams/backpressure.any.js": [
@@ -706002,7 +705777,7 @@
    "support"
   ],
   "tools/ci/ci_wptrunner_infrastructure.sh": [
-   "f3ce3e73ea796479529da554c17f61293d138d3a",
+   "e5b485dbff8040d797af4d9ce6b0681c6b3d9574",
    "support"
   ],
   "tools/ci/commands.json": [
@@ -710778,7 +710553,7 @@
    "support"
   ],
   "tools/wpt/browser.py": [
-   "3f578c09481c8e323baf2dc146be922e19c301cd",
+   "66ad8b50e8c00cce6aa49c28ec8dbfa07a2db31e",
    "support"
   ],
   "tools/wpt/commands.json": [
@@ -710806,7 +710581,7 @@
    "support"
   ],
   "tools/wpt/run.py": [
-   "c54d5aaba01c66095760541be766e8e673a02a47",
+   "c0cfa58950edfdf8a814624b5e0a232c995cdd0f",
    "support"
   ],
   "tools/wpt/testfiles.py": [
@@ -710826,7 +710601,7 @@
    "support"
   ],
   "tools/wpt/tests/test_wpt.py": [
-   "49d2b8758f70aafc3e6eea657389262f0be6534d",
+   "4685fa7abd2a55ed4c7ec2c1ed8f00929bd5dcbb",
    "support"
   ],
   "tools/wpt/tox.ini": [
@@ -712169,254 +711944,6 @@
    "4c95ae29dff774960c2d7d69ccfb7c2ecc3056cf",
    "support"
   ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/CompositionEvent.html": [
-   "0f8242b07d5aec992e14cea6b046ddbaa1c521f2",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.attrChange.html": [
-   "12c45fc848e6c86483cee19babc0b9351aac298f",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.attrName.html": [
-   "ca1ad97d24dbad89c54dbfb12cc0ff8f54d25b18",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.html": [
-   "c229abe96e3294a720bc04f82456f6c6b60b720c",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.newValue.html": [
-   "77b8a41e1a35499cdc4a37ff05b57fad054f7e9a",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.prevValue.html": [
-   "31fbec77644391fdcae9d6e6c96e7c144d1b448d",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMAttrModified.relatedNode.html": [
-   "5c30dabe22fd110f4540d8a7e6e97e2e0a3425bc",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMCharacterDataModified.html": [
-   "31d4fbf08f31f3b776ae970fc33f1285cd9f1ffe",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMNodeInserted.html": [
-   "0e0d26d1aaece67a685021b07e97edbc6db3e81c",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMNodeRemoved.html": [
-   "34d7112027c32bdac32b37aface0c89c659d50be",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/DOMSubtreeModified.html": [
-   "1819f563dacd442ed07eb9ef2d69e4732533b36f",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/Event.defaultPrevented.html": [
-   "8acd3cb979f4286affde5556b6d74c7a278b80d5",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/Event.eventPhase.html": [
-   "4bd3b51b46c3527ce4a961a90dea53582e22fddd",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/Event.stopPropagation.html": [
-   "019143e366c87215ca38ba21613e41280532f835",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.key.html": [
-   "ea1adb0751f129637391d007c9cfeb6460ec8d5d",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.location.html": [
-   "63fe460f3d3f986a5cd70e42eda9a6e090e77dc7",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/KeyboardEvent.modifiers.html": [
-   "ee490b47ec6745351e295dd0a28a89f86eb615df",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.button.html": [
-   "605565a7814e00eea908d47d0eab7df683c53228",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.image.map.area.html": [
-   "17b7dd5ccee436e6241d773728611b2e9efa3b72",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MouseEvent.preventDefault.html": [
-   "e6cb57806db7cd4233d7a0a832d0e17d1238ac27",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.hasFeature.html": [
-   "f550a5366df2099f510d7b9f3281d9169c7bc721",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.initMutationEvent.html": [
-   "3b2bceabf45ea60d1f84977ea63fd0a44adc998e",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/MutationEvent.relatedNode.html": [
-   "6b92079ef618ca62850c9795621d99cde51bc049",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/ProcessingInstruction.DOMCharacterDataModified.fail.html": [
-   "9b0843c115ee1b5f93450982dd9065b0b8abb4af",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/ProcessingInstruction.DOMCharacterDataModified.xml": [
-   "34ad59064ffb9147e211df34c056ebf927e89432",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.hasFeature.html": [
-   "853cc7c43572f0e79389ce69da30c809b59b7daa",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.initTextEvent.html": [
-   "52eae11aa9cffc077528e3354e353c20263ebd7d",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.IME.html": [
-   "af5c73624267ca9372077e5063e967a88068fd8d",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.drop.html": [
-   "14ffc19765bb9e4cc5772a32ac4f665152d8d86d",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.keyboard.html": [
-   "9d679d708e77a6c0915b79f9565e47c8bb2e1199",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.paste.html": [
-   "a93259cd60892be6aa34e1f2d32725fd2f01a2a9",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/TextEvent.inputMode.script.html": [
-   "c1327ebae57ada70477c7a721eb38df0cf8f597f",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/UIEvent.load.stylesheet.html": [
-   "a948a2f71a4905e181698710e598d806b7e0a4c9",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.Capture.Bubble.html": [
-   "4dfe246136af7e0d12db94c9ce122becfca4a958",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.ctrlKey.zoom.html": [
-   "52b17ced96cd8e122f8ac5fee412b1da8ebbba02",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.deltaMode.html": [
-   "11761f4083d286097321309fd195bfa55ebff5e5",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.hasFeature.html": [
-   "8bd224fa98eefd6f29dfd6b101f0f53f93acff61",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.initWheelEvent.html": [
-   "cd8c192e41b21b68ee750e456b2db0fa289706b9",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/WheelEvent.preventDefault.scroll.html": [
-   "6cb55a071f3f79f12d67c254dcc8c1f6cba14727",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/abort.img.html": [
-   "c0fb1eaf97d8fbebe691218aa5e57d895ca4c5dd",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/abort.testresult.html": [
-   "e0f6243b8acf5de965ab53fefa1c56f9293abb12",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/blur.html": [
-   "cef282bfe5963fafe75f9dc8dda98d31f308d9b2",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.data.html": [
-   "177c37e8d768bccaa8a09b7458d32719a3c0c04b",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.keydown.html": [
-   "7316d1a8a30e6be7af4fabdedc24008a22875fea",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/compositionstart.preventDefault.html": [
-   "74fc52b57990c63808b160cac154a88c79217612",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/converted/EventListener.dispatch.new.event.html": [
-   "e0ab7e0d3e417cd4595d7590d9d12d6d25bbc366",
-   "testharness"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/converted/support/ProcessingInstruction.DOMCharacterDataModified.xml": [
-   "4c95ae29dff774960c2d7d69ccfb7c2ecc3056cf",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/dispatchEvent.click.checkbox.html": [
-   "757bb126460ba499a1dfdcd98f32bcd480c8f956",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/error.image.html": [
-   "a629652d4f7c541600df9c7041960e920e71fe8f",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/focusin.html": [
-   "a6eb1b663801bab4f522994a44fb60a399dfb2a0",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/focusin.relatedTarget.html": [
-   "a36d254666dc00385c1ab8653dce93fbfe5e97c8",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/focusout.relatedTarget.html": [
-   "bc02267ed7a13ae223605b67bd72a49e50ec09e6",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/hasFeature.Events.html": [
-   "e0c9ba18d82f2a952f6ee813c4e8fb6a4f02f2da",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/hasFeature.feature.string.html": [
-   "e96c39c8556e3fae603a9f25e9370fda6fad2eac",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/load.image.html": [
-   "19414eaf022747f9fce17130a66c80adb15be7e1",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/mouseenter.ctrlKey.html": [
-   "dac16046cf90a2fd02e7292a94a7554579f2ebb5",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/mouseenter.relatedTarget.html": [
-   "f2d449dae85778c06d3d83f636a188cf2299a283",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/mouseleave.relatedTarget.html": [
-   "37ca7197507aac95d1950e56a575bee5da314acd",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/support/16kb.js": [
-   "fb3c0d64b15ea7d764fa87e1eb0c1aef56ef8e75",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/support/InvalidBitMap.png": [
-   "0a15a8e10d8dcce5fc3cf33ee9079d63b25e47f4",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/support/iepreview.png": [
-   "63959a05626aa3225f963570ec4a54631efca19e",
-   "support"
-  ],
-  "uievents/legacy-domevents-tests/submissions/Microsoft/support/style01.css": [
-   "961757bf3da5cb22fb389a02d2d8b9713772e637",
-   "support"
-  ],
   "uievents/legacy/Event-subclasses-init.html": [
    "676eec9280907b86201ca98963c36bc1e5263c33",
    "testharness"
@@ -714094,7 +713621,7 @@
    "manual"
   ],
   "wake-lock/wakelock-disabled-by-feature-policy.https.sub.html": [
-   "75064767ceebeb3abfad31f9dc9a8a2b91e10e44",
+   "ad7eeb075f44430dbe4f9ed7a55c2ce3f155d0c0",
    "testharness"
   ],
   "wake-lock/wakelock-disabled-by-feature-policy.https.sub.html.headers": [
@@ -715410,7 +714937,7 @@
    "testharness"
   ],
   "webaudio/the-audio-api/the-audionode-interface/audionode-connect-method-chaining.html": [
-   "4163a8439cd08c1f8cdcb587c569653c2618e021",
+   "5703a2a6c7f565f8705a5630d0b9e2b67394985c",
    "testharness"
   ],
   "webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html": [
@@ -715502,7 +715029,7 @@
    "testharness"
   ],
   "webaudio/the-audio-api/the-audioparam-interface/event-insertion.html": [
-   "07a54c3bbf68a7af3d651140df5ddcc99ac0f823",
+   "2eef895c8e8750bc25c45ba67c8c67c60e2f17bc",
    "testharness"
   ],
   "webaudio/the-audio-api/the-audioparam-interface/k-rate-audioworklet.https.html": [
@@ -715710,7 +715237,7 @@
    "testharness"
   ],
   "webaudio/the-audio-api/the-biquadfilternode-interface/biquad-getFrequencyResponse.html": [
-   "2389b334fb86b71ac38f3c6f60f917175caf8c28",
+   "23222e4df9698d408b886ea108cc4c732a7d61fe",
    "testharness"
   ],
   "webaudio/the-audio-api/the-biquadfilternode-interface/biquad-highpass.html": [
@@ -715853,6 +715380,10 @@
    "935ceeb715edd2ffdeb7979d6824736fa82b6d2f",
    "testharness"
   ],
+  "webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html": [
+   "c1686da964532db87b51d0cdb79081b14046c5cb",
+   "testharness"
+  ],
   "webaudio/the-audio-api/the-delaynode-interface/.gitkeep": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
@@ -715965,6 +715496,10 @@
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
+  "webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html": [
+   "5d3fd0c26f4aa0347e2682b303d9bedbcc2b7600",
+   "testharness"
+  ],
   "webaudio/the-audio-api/the-mediastreamaudiosourcenode-interface/.gitkeep": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
diff --git a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
index 3d135f3bd66..939a36eb9d9 100644
--- a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
+++ b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
@@ -2,7 +2,6 @@
   type: testharness
 
 [single-byte-decoder.html?document]
-  expected: TIMEOUT
   [ISO-8859-4: iso_8859-4:1988 (document.characterSet and document.inputEncoding)]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index 3423b4af7bf..e516f579627 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -163,7 +163,7 @@
     expected: NOTRUN
 
   [<iframe>: combined response Content-Type: text/html;" " text/plain]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Request: combined response Content-Type: text/plain;charset=gbk;x=foo text/plain]
     expected: NOTRUN
@@ -172,7 +172,7 @@
     expected: NOTRUN
 
   [<iframe>: combined response Content-Type: text/html;" \\" text/plain ";charset=GBK]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Response: combined response Content-Type: text/html;x=" text/plain]
     expected: NOTRUN
@@ -202,7 +202,7 @@
     expected: NOTRUN
 
   [<iframe>: separate response Content-Type: text/html;" " text/plain]
-    expected: TIMEOUT
+    expected: FAIL
 
   [fetch(): separate response Content-Type: text/plain */*;charset=gbk]
     expected: NOTRUN
@@ -286,7 +286,7 @@
     expected: NOTRUN
 
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain ";charset=GBK]
-    expected: TIMEOUT
+    expected: FAIL
 
   [fetch(): combined response Content-Type: text/html;" " text/plain]
     expected: NOTRUN
@@ -312,33 +312,12 @@
   [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: TIMEOUT
-
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" text/plain]
-    expected: TIMEOUT
-
-  [<iframe>: separate response Content-Type: text/html */*]
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;charset=gbk text/plain text/html]
+  [<iframe>: separate response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: TIMEOUT
-
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
-    expected: TIMEOUT
-
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
-    expected: TIMEOUT
-
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 87c807a49ff..a639f15230c 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%0C]
     expected: FAIL
 
+  [Content-Type-Options%3A%20nosniff]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html.ini
deleted file mode 100644
index 9bacb9f5c4e..00000000000
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[javascript-url-abort-return-value-string.tentative.html]
-  [Aborting fetch for javascript:string navigation]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
new file mode 100644
index 00000000000..87b07c3e670
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_1.html]
+  [Multiple history traversals from the same task]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
deleted file mode 100644
index 8cc42056d34..00000000000
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[non-active-document.html]
-  [DOMParser]
-    expected: FAIL
-
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml.ini b/tests/wpt/metadata/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml.ini
new file mode 100644
index 00000000000..ad6e0b4e9a2
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml.ini
@@ -0,0 +1,4 @@
+[textarea-selection-while-parsing.xhtml]
+  [Value setter while parsing textarea children should move selection{Start,End} to the end]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/syntax/parsing/DOMContentLoaded-defer.html.ini b/tests/wpt/metadata/html/syntax/parsing/DOMContentLoaded-defer.html.ini
deleted file mode 100644
index a9677391662..00000000000
--- a/tests/wpt/metadata/html/syntax/parsing/DOMContentLoaded-defer.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[DOMContentLoaded-defer.html]
-  [The end: DOMContentLoaded and defer scripts]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/resource-timing/nested-context-navigations-iframe.html.ini b/tests/wpt/metadata/resource-timing/nested-context-navigations-iframe.html.ini
index 9c3272b35da..87d3c09909f 100644
--- a/tests/wpt/metadata/resource-timing/nested-context-navigations-iframe.html.ini
+++ b/tests/wpt/metadata/resource-timing/nested-context-navigations-iframe.html.ini
@@ -1,5 +1,5 @@
 [nested-context-navigations-iframe.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Test that iframe navigations are not observable by the parent, even after history navigations by the parent]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html.ini
new file mode 100644
index 00000000000..87a247cb5ad
--- /dev/null
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html.ini
@@ -0,0 +1,2 @@
+[realtime-conv.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html.ini
new file mode 100644
index 00000000000..bc21843f0de
--- /dev/null
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html.ini
@@ -0,0 +1,5 @@
+[ctor-mediastreamaudiodestination.html]
+  expected: ERROR
+  [X node0 = new MediaStreamAudioDestinationNode(context) incorrectly threw TypeError: "window[name\] is not a constructor".]
+    expected: FAIL
+
diff --git a/tests/wpt/web-platform-tests/.gitignore b/tests/wpt/web-platform-tests/.gitignore
index 0f080ca986b..60d06876d96 100644
--- a/tests/wpt/web-platform-tests/.gitignore
+++ b/tests/wpt/web-platform-tests/.gitignore
@@ -47,3 +47,6 @@ scratch
 /css/dist_last
 /css/tools/cache
 /webaudio/idl/*
+
+# w3c-test.org PR-branch mirroring
+submissions/
diff --git a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-array-buffer.any.js b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-array-buffer.any.js
index b72427fd5cf..2310646e5fd 100644
--- a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-array-buffer.any.js
+++ b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-array-buffer.any.js
@@ -32,3 +32,14 @@ promise_test(async () => {
   const array_buffer = await blob.arrayBuffer();
   assert_equals_typed_array(new Uint8Array(array_buffer), typed_arr);
 }, "Blob.arrayBuffer() non-unicode input")
+
+promise_test(async () => {
+  const input_arr = new TextEncoder().encode("PASS");
+  const blob = new Blob([input_arr]);
+  const array_buffer_results = await Promise.all([blob.arrayBuffer(),
+      blob.arrayBuffer(), blob.arrayBuffer()]);
+  for (let array_buffer of array_buffer_results) {
+    assert_true(array_buffer instanceof ArrayBuffer);
+    assert_equals_typed_array(new Uint8Array(array_buffer), input_arr);
+  }
+}, "Blob.arrayBuffer() concurrent reads")
diff --git a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-stream.any.js b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-stream.any.js
index 894f09f8ece..bd4f8dc40bc 100644
--- a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-stream.any.js
+++ b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-stream.any.js
@@ -1,5 +1,6 @@
 // META: title=Blob Stream
 // META: script=../support/Blob.js
+// META: script=../../streams/resources/test-utils.js
 'use strict';
 
 // Takes in a ReadableStream and reads from it until it is done, returning
@@ -25,7 +26,7 @@ async function read_all_chunks(stream) {
 
 promise_test(async () => {
   const blob = new Blob(["PASS"]);
-  const stream = await blob.stream()
+  const stream = blob.stream();
   const chunks = await read_all_chunks(stream);
   for (let [index, value] of chunks.entries()) {
     assert_equals(value, "PASS".charCodeAt(index));
@@ -34,9 +35,8 @@ promise_test(async () => {
 
 promise_test(async () => {
   const blob = new Blob();
-  const stream = await blob.stream()
+  const stream = blob.stream();
   const chunks = await read_all_chunks(stream);
-
   assert_array_equals(chunks, []);
 }, "Blob.stream() empty Blob")
 
@@ -44,7 +44,19 @@ promise_test(async () => {
   const input_arr = [8, 241, 48, 123, 151];
   const typed_arr = new Uint8Array(input_arr);
   const blob = new Blob([typed_arr]);
-  const stream = await blob.stream()
+  const stream = blob.stream();
   const chunks = await read_all_chunks(stream);
-  assert_array_equals(chunks, input_arr)
+  assert_array_equals(chunks, input_arr);
 }, "Blob.stream() non-unicode input")
+
+promise_test(async() => {
+  const input_arr = [8, 241, 48, 123, 151];
+  const typed_arr = new Uint8Array(input_arr);
+  let blob = new Blob([typed_arr]);
+  const stream = blob.stream();
+  blob = null;
+  garbageCollect();
+  const chunks = await read_all_chunks(stream);
+  assert_array_equals(chunks, input_arr);
+}, "Blob.stream() garbage collection of blob shouldn't break stream" +
+      "consumption")
diff --git a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-text.any.js b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-text.any.js
index 960c9605462..d04fa97cffe 100644
--- a/tests/wpt/web-platform-tests/FileAPI/blob/Blob-text.any.js
+++ b/tests/wpt/web-platform-tests/FileAPI/blob/Blob-text.any.js
@@ -50,3 +50,15 @@ promise_test(async () => {
   assert_equals(text, "\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd" +
       "\ufffd\ufffd\ufffd\ufffd");
 }, "Blob.text() invalid utf-8 input")
+
+promise_test(async () => {
+  const input_arr = new Uint8Array([192, 193, 245, 246, 247, 248, 249, 250, 251,
+      252, 253, 254, 255]);
+  const blob = new Blob([input_arr]);
+  const text_results = await Promise.all([blob.text(), blob.text(),
+      blob.text()]);
+  for (let text of text_results) {
+    assert_equals(text, "\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd" +
+        "\ufffd\ufffd\ufffd\ufffd");
+  }
+}, "Blob.text() concurrent reads")
diff --git a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-creation.https.html b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-creation.https.html
index 02886c444dc..5d033b30099 100644
--- a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-creation.https.html
+++ b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-creation.https.html
@@ -130,21 +130,6 @@ function CreateKeyframeEffect(element) {
     assert_equals(workletAnimation.playState, 'idle');
   }, 'Creating animation with effects from different documents is allowed');
 
-  promise_test(async t => {
-    await runInAnimationWorklet(document.getElementById('simple_animate').textContent);
-    // TODO(crbug.com/781816): Allow KeyframeEffects with no target in AnimationWorklet.
-    let effect = CreateKeyframeEffect(null);
-    let effect2 = CreateKeyframeEffect(document.querySelector('#element'));
-
-    let constructorFunc = function() { new WorkletAnimation(
-        'test-animator', [ effect, effect2 ]); };
-    assert_throws('NotSupportedError', constructorFunc);
-
-    let constructorFunc2 = function() { new WorkletAnimation(
-        'test-animator', [ effect2, effect ]); };
-    assert_throws('NotSupportedError', constructorFunc2);
-  }, 'If an effect has no target, object construction should fail');
-
   promise_test(async t => {
     await runInAnimationWorklet(document.getElementById('simple_animate').textContent);
     let effect = CreateKeyframeEffect(document.querySelector('#element'));
diff --git a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration-ref.html b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration-ref.html
deleted file mode 100644
index 81b01bdca81..00000000000
--- a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration-ref.html
+++ /dev/null
@@ -1,12 +0,0 @@
-<!DOCTYPE html>
-<title>Reference for WorkletAnimation should continue to be in effect forever, even if its duration is passed</title>
-<style>
-#box {
-  width: 100px;
-  height: 100px;
-  background-color: green;
-  transform: translateY(100px);
-}
-</style>
-
-<div id="box"></div>
diff --git a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration.https.html b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration.https.html
index 1526004eaf1..1a8afc1e892 100644
--- a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration.https.html
+++ b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-duration.https.html
@@ -1,7 +1,6 @@
 <html>
 <title>WorkletAnimation should continue to be in effect forever, even if its duration is passed</title>
 <link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
-<link rel="match" href="worklet-animation-duration-ref.html">
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-without-target.https.html b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-without-target.https.html
new file mode 100644
index 00000000000..bfb6b4faee4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/animation-worklet/worklet-animation-without-target.https.html
@@ -0,0 +1,76 @@
+<!DOCTYPE html>
+<title>Verify that effect without target is supported</title>
+<link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="common.js"></script>
+
+<div id="box"></div>
+
+<script>
+
+setup(setupAndRegisterTests, {explicit_done: true});
+
+async function setupAndRegisterTests() {
+  await registerPassthroughAnimator();
+
+  promise_test(async t => {
+    const effect = new KeyframeEffect(null,
+      { transform: ['translateY(100px)', 'translateY(200px)'] },
+      { duration: Infinity, iterations: 1 }
+    );
+    const animation = new WorkletAnimation('passthrough', effect);
+    animation.play();
+
+    // Allow one async animation frame to pass so that animation is running.
+    await waitForAsyncAnimationFrames(1);
+    assert_equals(animation.playState, "running");
+    // Allow time to advance so that we have a non-zero current time.
+    await waitForDocumentTimelineAdvance();
+    const t0 = document.timeline.currentTime;
+    assert_greater_than(animation.currentTime, 0);
+    assert_times_equal(animation.currentTime, (t0 - animation.startTime));
+    assert_equals(animation.playState, "running");
+
+    animation.cancel();
+  }, 'Animating effect with no target should work.');
+
+  promise_test(async t => {
+    const effect = new KeyframeEffect(document.getElementById('box'),
+      { transform: ['translateY(100px)', 'translateY(200px)'] },
+      { duration: Infinity, iterations: 1 }
+    );
+
+    const animation = new WorkletAnimation('passthrough', effect);
+    animation.play();
+
+    // Allow one async animation frame to pass so that animation is running.
+    await waitForAsyncAnimationFrames(1);
+    assert_equals(animation.playState, "running");
+    // Allow time to advance so that we have a non-zero current time.
+    await waitForDocumentTimelineAdvance();
+    const t0 = document.timeline.currentTime;
+    assert_greater_than(animation.currentTime, 0);
+    assert_times_equal(animation.currentTime, (t0 - animation.startTime));
+    assert_equals(animation.playState, "running");
+
+    await waitForDocumentTimelineAdvance();
+    animation.effect.target = null;
+    const t1 = document.timeline.currentTime;
+    assert_times_equal(animation.currentTime, (t1 - animation.startTime));
+    assert_equals(animation.playState, "running");
+
+    await waitForDocumentTimelineAdvance();
+    animation.effect.target = document.getElementById('box');
+    const t2 = document.timeline.currentTime;
+    assert_times_equal(animation.currentTime, (t2 - animation.startTime));
+    assert_equals(animation.playState, "running");
+
+    animation.cancel();
+  }, 'The existence of a target does not affect the animation.');
+
+  done();
+}
+</script>
diff --git a/tests/wpt/web-platform-tests/common/security-features/resources/common.js b/tests/wpt/web-platform-tests/common/security-features/resources/common.js
index 782e428c66f..2b4349d24e5 100644
--- a/tests/wpt/web-platform-tests/common/security-features/resources/common.js
+++ b/tests/wpt/web-platform-tests/common/security-features/resources/common.js
@@ -425,7 +425,8 @@ function requestViaIframe(url, additionalAttributes) {
       false);
   return bindEvents2(window, "message", iframe, "error", window, "error")
       .then(event => {
-          assert_equals(event.source, iframe.contentWindow);
+          if (event.source !== iframe.contentWindow)
+            return Promise.reject(new Error('Unexpected event.source'));
           return event.data;
         });
 }
@@ -570,8 +571,7 @@ function get_worklet(type) {
   if (type == 'audio')
     return new OfflineAudioContext(2,44100*40,44100).audioWorklet;
 
-  assert_unreached('unknown worklet type is passed.');
-  return undefined;
+  throw new Error('unknown worklet type is passed.');
 }
 
 function requestViaWorklet(type, url) {
@@ -599,7 +599,8 @@ function requestViaNavigable(navigableElement, url) {
   const promise =
     bindEvents2(window, "message", iframe, "error", window, "error")
       .then(event => {
-          assert_equals(event.source, iframe.contentWindow, "event.source");
+          if (event.source !== iframe.contentWindow)
+            return Promise.reject(new Error('Unexpected event.source'));
           return event.data;
         });
   navigableElement.click();
diff --git a/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top-ref.html b/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top-ref.html
new file mode 100644
index 00000000000..8ccc1548ef6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>Reference for sticky elements should invalidate when top/left/bottom/right changes</title>
+
+<style>
+.box {
+  /* Triggers promotion without creating stacking context. */
+  backface-visibility: hidden;
+  background: green;
+  position: sticky;
+  top: 200px;
+  width: 100px;
+  height: 100px;
+}
+
+.spacer {
+  height: 200vh;
+}
+</style>
+
+<div class="box"></div>
+<div class="spacer"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top.html b/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top.html
new file mode 100644
index 00000000000..054a8a610d9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-position/position-sticky-change-top.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html class='reftest-wait'>
+<title>Sticky elements should invalidate when top/left/bottom/right changes</title>
+<link rel="match" href="position-sticky-change-top-ref.html" />
+<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
+<link rel="help" href="https://crbug.com/939632">
+<meta name="assert" content="This test checks that sticky elements are invalidated correctly when top/left/bottom/right change "/>
+
+<script src="/common/reftest-wait.js"></script>
+
+<!--
+  It is important for this test that the sticky element is viewport-bound, and
+  that multiple animation frames pass before changing the style.
+-->
+<style>
+.marker {
+  background: red;
+  position: absolute;
+  top: 200px;
+  height: 100px;
+  width: 100px;
+}
+
+.sticky {
+  /* Triggers promotion without creating stacking context. */
+  backface-visibility: hidden;
+  background: green;
+  position: sticky;
+  top: 0;
+  width: 100px;
+  height: 100px;
+}
+
+.spacer {
+  height: 200vh;
+}
+</style>
+<div class="marker"></div>
+
+<div class="sticky"></div>
+<div class="spacer"></div>
+
+<script>
+requestAnimationFrame(() => {
+  requestAnimationFrame(() => {
+    document.querySelector('.sticky').style.setProperty('top', '200px');
+    takeScreenshot();
+  });
+});
+</script>
+</html>
diff --git a/tests/wpt/web-platform-tests/docs/_running-tests/safari.md b/tests/wpt/web-platform-tests/docs/_running-tests/safari.md
index e81383d498c..89f329a2986 100644
--- a/tests/wpt/web-platform-tests/docs/_running-tests/safari.md
+++ b/tests/wpt/web-platform-tests/docs/_running-tests/safari.md
@@ -3,7 +3,7 @@ layout: page
 title: Safari
 ---
 To run Safari on macOS, some manual setup is required. Some steps are different
-for Safari and Safari Technology Preview, in which case only step is needed.
+for Safari and Safari Technology Preview.
 
   * Allow Safari to be controlled by SafariDriver:
     * `safaridriver --enable` or
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml
new file mode 100644
index 00000000000..57326bb4a80
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textarea-selection-while-parsing.xhtml
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<textarea>
+a
+<script>document.querySelector('textarea').value = 'ggg';</script>
+b
+</textarea>
+<script>
+test(() => {
+  let ta = document.querySelector('textarea');
+  assert_equals(ta.selectionStart, 3);
+  assert_equals(ta.selectionEnd, 3);
+}, 'Value setter while parsing textarea children should move ' +
+    'selection{Start,End} to the end');
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/intersection-observer/v2/inline-occlusion.html b/tests/wpt/web-platform-tests/intersection-observer/v2/inline-occlusion.html
new file mode 100644
index 00000000000..e4b097e62ae
--- /dev/null
+++ b/tests/wpt/web-platform-tests/intersection-observer/v2/inline-occlusion.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/intersection-observer-test-utils.js"></script>
+
+<style>
+body, html {
+  margin: 0;
+}
+pre, #log {
+  position: absolute;
+  top: 0;
+  left: 200px;
+}
+.testdiv {
+  font-size: 24px;
+}
+</style>
+
+<div class="testdiv">This is the <span id="target">target</span>.</div>
+<div class="testdiv" id="occluder">This is the occluder.</div>
+
+<script>
+var delay = 100;
+var entries = [];
+var target;
+var occluder;
+
+runTestCycle(function() {
+  target = document.getElementById("target");
+  occluder = document.getElementById("occluder");
+  assert_true(!!target, "target exists");
+  assert_true(!!occluder, "occluder exists");
+  var observer = new IntersectionObserver(function(changes) {
+    entries = entries.concat(changes)
+  }, {trackVisibility: true, delay: delay});
+  observer.observe(target);
+  entries = entries.concat(observer.takeRecords());
+  assert_equals(entries.length, 0, "No initial notifications.");
+  runTestCycle(step0, "First rAF.", delay);
+}, "IntersectionObserverV2 in a single document using the implicit root, with an occluding element.", delay);
+
+function step0() {
+  occluder.style.marginTop = "-10px";
+  runTestCycle(step1, "occluder.style.marginTop = '-10px'", delay);
+  assert_equals(entries.length, 1);
+  assert_true(entries[0].isVisible);
+}
+
+function step1() {
+  // Occluding elements with opacity=0 should not affect target visibility.
+  occluder.style.opacity = "0";
+  runTestCycle(step2, "occluder.style.opacity = 0", delay);
+  assert_equals(entries.length, 2);
+  assert_false(entries[1].isVisible);
+}
+
+function step2() {
+  assert_equals(entries.length, 3);
+  assert_true(entries[2].isVisible);
+}
+</script>
diff --git a/tests/wpt/web-platform-tests/intersection-observer/v2/text-editor-occlusion.html b/tests/wpt/web-platform-tests/intersection-observer/v2/text-editor-occlusion.html
new file mode 100644
index 00000000000..2edb7bbbe65
--- /dev/null
+++ b/tests/wpt/web-platform-tests/intersection-observer/v2/text-editor-occlusion.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/intersection-observer-test-utils.js"></script>
+
+<style>
+body, html {
+  margin: 0;
+}
+pre, #log {
+  position: absolute;
+  top: 0;
+  left: 200px;
+}
+.testdiv {
+  font-size: 24px;
+}
+</style>
+
+<div class="testdiv">Target: <input id="target" type="text"></input></div>
+<div class="testdiv" id="occluder">This is the occluder.</div>
+
+<script>
+var delay = 100;
+var entries = [];
+var target;
+var occluder;
+
+runTestCycle(function() {
+  target = document.getElementById("target");
+  occluder = document.getElementById("occluder");
+  assert_true(!!target, "target exists");
+  assert_true(!!occluder, "occluder exists");
+  var observer = new IntersectionObserver(function(changes) {
+    entries = entries.concat(changes)
+  }, {trackVisibility: true, delay: delay});
+  observer.observe(target);
+  entries = entries.concat(observer.takeRecords());
+  assert_equals(entries.length, 0, "No initial notifications.");
+  runTestCycle(step0, "First rAF.", delay);
+}, "IntersectionObserverV2 in a single document using the implicit root, with an occluding element.", delay);
+
+function step0() {
+  occluder.style.marginTop = "-10px";
+  runTestCycle(step1, "occluder.style.marginTop = '-10px'", delay);
+  assert_equals(entries.length, 1);
+  assert_true(entries[0].isVisible);
+}
+
+function step1() {
+  // Occluding elements with opacity=0 should not affect target visibility.
+  occluder.style.opacity = "0";
+  runTestCycle(step2, "occluder.style.opacity = 0", delay);
+  assert_equals(entries.length, 2);
+  assert_false(entries[1].isVisible);
+}
+
+function step2() {
+  assert_equals(entries.length, 3);
+  assert_true(entries[2].isVisible);
+}
+</script>
diff --git a/tests/wpt/web-platform-tests/lifecycle/child-display-none.tentative.html b/tests/wpt/web-platform-tests/lifecycle/child-display-none.tentative.html
index f76b4e7b608..d4ca6dab1e0 100644
--- a/tests/wpt/web-platform-tests/lifecycle/child-display-none.tentative.html
+++ b/tests/wpt/web-platform-tests/lifecycle/child-display-none.tentative.html
@@ -26,6 +26,7 @@ async_test((t) => {
     }
   }));
 
+  child.allow = "execution-while-not-rendered 'none'";
   child.src = "resources/subframe.html";
   document.body.appendChild(child);
   child.style = "display: none";
diff --git a/tests/wpt/web-platform-tests/lifecycle/child-out-of-viewport.tentative.html b/tests/wpt/web-platform-tests/lifecycle/child-out-of-viewport.tentative.html
new file mode 100644
index 00000000000..4d8f868bfb5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/lifecycle/child-out-of-viewport.tentative.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Child frame marked as frozen</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<div style="width: 200px; height: 4000px"></div>
+<script>
+async_test((t) => {
+
+  var child = document.createElement('iframe');
+
+  var loaded = false;
+  var frozen = false;
+
+  window.addEventListener('message', t.step_func((e) => {
+    if (e.data == "load") {
+      loaded = true;
+    } else if (e.data == "freeze") {
+      assert_true(loaded);
+      frozen = true;
+      child.scrollIntoView();
+    } else if (e.data == "resume") {
+      assert_true(loaded);
+      assert_true(frozen);
+      t.done();
+    }
+  }));
+
+  child.allow = "execution-while-out-of-viewport 'none'";
+  child.src = "resources/subframe.html";
+  document.body.appendChild(child);
+}, "Child frame frozen");
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/lint.whitelist b/tests/wpt/web-platform-tests/lint.whitelist
index 0ec256a7525..a7a4600d9cd 100644
--- a/tests/wpt/web-platform-tests/lint.whitelist
+++ b/tests/wpt/web-platform-tests/lint.whitelist
@@ -64,6 +64,9 @@ TRAILING WHITESPACE, INDENT TABS, CR AT EOL: *.sxg
 
 TRAILING WHITESPACE: xhr/resources/headers-some-are-empty.asis
 
+## .gitignore
+W3C-TEST.ORG: .gitignore
+
 ## Documentation ##
 
 W3C-TEST.ORG: README.md
diff --git a/tests/wpt/web-platform-tests/resource-timing/resources/nested-contexts.js b/tests/wpt/web-platform-tests/resource-timing/resources/nested-contexts.js
index 0c202243702..07ef33851b0 100644
--- a/tests/wpt/web-platform-tests/resource-timing/resources/nested-contexts.js
+++ b/tests/wpt/web-platform-tests/resource-timing/resources/nested-contexts.js
@@ -44,7 +44,7 @@ function setup_refresh_test() {
 }
 
 function setup_back_navigation(pushed_url) {
-    function verify_document_navigate_not_observable() {
+    function verify_document_navigate_not_observable(navigated_back) {
         let entries = performance.getEntriesByType("resource");
         let found_first_document = false;
         for (entry of entries) {
@@ -57,16 +57,18 @@ function setup_back_navigation(pushed_url) {
             }
         }
         if (!found_first_document) {
-            opener.postMessage("FAIL - first document not exposed", "*");
+            opener.postMessage("FAIL - first document not exposed. navigated_back is " + navigated_back, "*");
             return;
         }
-        opener.postMessage("PASS", "*");
+        if (navigated_back) {
+            opener.postMessage("PASS", "*");
+        }
     }
     window.addEventListener("message", e=>{
         if (e.data == "navigated") {
+            verify_document_navigate_not_observable(sessionStorage.navigated);
             if (sessionStorage.navigated) {
                 delete sessionStorage.navigated;
-                verify_document_navigate_not_observable();
             } else {
                 sessionStorage.navigated = true;
                 setTimeout(() => {
diff --git a/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate-back.html b/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate-back.html
index 64e5f584731..df32ab0c199 100644
--- a/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate-back.html
+++ b/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate-back.html
@@ -8,7 +8,7 @@
 <script>
 setup_back_navigation("object-navigate-back.html");
 </script>
-<object></object>
+<object type="text/html"></object>
 <script>
     document.getElementsByTagName("object")[0].data = pre_navigate_url;
 </script>
diff --git a/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate.html b/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate.html
index cbb862e7e00..3ae39c8bc44 100644
--- a/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate.html
+++ b/tests/wpt/web-platform-tests/resource-timing/resources/object-navigate.html
@@ -9,7 +9,7 @@
     setup_navigate_test();
 </script>
 <div id=log></div>
-<object></object>
+<object type="text/html"></object>
 <script>
     document.getElementsByTagName("object")[0].data = pre_navigate_url;
 </script>
diff --git a/tests/wpt/web-platform-tests/resource-timing/resources/object-refresh.html b/tests/wpt/web-platform-tests/resource-timing/resources/object-refresh.html
index b14cf7f17c9..9e43e19de19 100644
--- a/tests/wpt/web-platform-tests/resource-timing/resources/object-refresh.html
+++ b/tests/wpt/web-platform-tests/resource-timing/resources/object-refresh.html
@@ -9,7 +9,7 @@
     setup_refresh_test();
 </script>
 <div id=log></div>
-<object></object>
+<object type="text/html"></object>
 <script>
     document.getElementsByTagName("object")[0].data = pre_refresh_url;
 </script>
diff --git a/tests/wpt/web-platform-tests/streams/resources/test-utils.js b/tests/wpt/web-platform-tests/streams/resources/test-utils.js
index 871ab49fa81..5a9e2479faa 100644
--- a/tests/wpt/web-platform-tests/streams/resources/test-utils.js
+++ b/tests/wpt/web-platform-tests/streams/resources/test-utils.js
@@ -50,6 +50,7 @@ self.constructorThrowsForAll = (constructor, firstArgs) => {
 self.garbageCollect = () => {
   if (self.gc) {
     // Use --expose_gc for V8 (and Node.js)
+    // to pass this flag at chrome launch use: --js-flags="--expose-gc"
     // Exposed in SpiderMonkey shell as well
     self.gc();
   } else if (self.GCController) {
diff --git a/tests/wpt/web-platform-tests/tools/ci/ci_wptrunner_infrastructure.sh b/tests/wpt/web-platform-tests/tools/ci/ci_wptrunner_infrastructure.sh
index f3ce3e73ea7..e5b485dbff8 100755
--- a/tests/wpt/web-platform-tests/tools/ci/ci_wptrunner_infrastructure.sh
+++ b/tests/wpt/web-platform-tests/tools/ci/ci_wptrunner_infrastructure.sh
@@ -25,7 +25,7 @@ main() {
     for PRODUCT in "${PRODUCTS[@]}"; do
         if [[ "$PRODUCT" == "chrome" ]]; then
             add_wpt_hosts
-            test_infrastructure "--binary=$(which google-chrome-unstable)"
+            test_infrastructure "--binary=$(which google-chrome-unstable) --channel dev"
         else
             test_infrastructure
         fi
diff --git a/tests/wpt/web-platform-tests/tools/wpt/browser.py b/tests/wpt/web-platform-tests/tools/wpt/browser.py
index 3f578c09481..66ad8b50e8c 100644
--- a/tests/wpt/web-platform-tests/tools/wpt/browser.py
+++ b/tests/wpt/web-platform-tests/tools/wpt/browser.py
@@ -461,36 +461,48 @@ class Chrome(Browser):
     def find_webdriver(self, channel=None):
         return find_executable("chromedriver")
 
-    def _latest_chromedriver_url(self, browser_binary=None):
-        latest = None
-        chrome_version = self.version(browser_binary)
-        assert chrome_version, "Cannot detect the version of Chrome"
-
-        # Remove channel suffixes (e.g. " dev").
-        chrome_version = chrome_version.split(' ')[0]
+    def _official_chromedriver_url(self, chrome_version):
+        # http://chromedriver.chromium.org/downloads/version-selection
         parts = chrome_version.split(".")
-        if len(parts) == 4:
-            latest_url = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE_%s.%s.%s" % tuple(parts[:-1])
+        assert len(parts) == 4
+        latest_url = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE_%s.%s.%s" % tuple(parts[:-1])
+        try:
+            latest = get(latest_url).text.strip()
+        except requests.RequestException:
+            latest_url = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE_%s" % parts[0]
             try:
                 latest = get(latest_url).text.strip()
             except requests.RequestException:
-                latest_url = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE_%s" % parts[0]
-                try:
-                    latest = get(latest_url).text.strip()
-                except requests.RequestException:
-                    pass
-        if latest is None:
-            # Fall back to *Chromium* build archives.
+                return None
+        return "https://chromedriver.storage.googleapis.com/%s/chromedriver_%s.zip" % (
+            latest, self.platform_string())
+
+    def _chromium_chromedriver_url(self, chrome_version):
+        try:
+            # Try to find the Chromium build with the same revision.
             omaha = get("https://omahaproxy.appspot.com/deps.json?version=" + chrome_version).json()
             revision = omaha['chromium_base_position']
             url = "https://storage.googleapis.com/chromium-browser-snapshots/%s/%s/chromedriver_%s.zip" % (
                 self.chromium_platform_string(), revision, self.platform_string())
-        else:
-            url = "https://chromedriver.storage.googleapis.com/%s/chromedriver_%s.zip" % (
-                latest, self.platform_string())
-
+            # Check the status without downloading the content (this is a streaming request).
+            get(url)
+        except requests.RequestException:
+            # Fall back to the tip-of-tree Chromium build.
+            revision_url = "https://storage.googleapis.com/chromium-browser-snapshots/%s/LAST_CHANGE" % (
+                self.chromium_platform_string())
+            revision = get(revision_url).text.strip()
+            url = "https://storage.googleapis.com/chromium-browser-snapshots/%s/%s/chromedriver_%s.zip" % (
+                self.chromium_platform_string(), revision, self.platform_string())
         return url
 
+    def _latest_chromedriver_url(self, browser_binary=None):
+        chrome_version = self.version(browser_binary)
+        assert chrome_version, "Cannot detect the version of Chrome"
+        # Remove channel suffixes (e.g. " dev").
+        chrome_version = chrome_version.split(' ')[0]
+        return (self._official_chromedriver_url(chrome_version) or
+                self._chromium_chromedriver_url(chrome_version))
+
     def install_webdriver(self, dest=None, channel=None, browser_binary=None):
         if dest is None:
             dest = os.pwd
diff --git a/tests/wpt/web-platform-tests/tools/wpt/run.py b/tests/wpt/web-platform-tests/tools/wpt/run.py
index c54d5aaba01..c0cfa58950e 100644
--- a/tests/wpt/web-platform-tests/tools/wpt/run.py
+++ b/tests/wpt/web-platform-tests/tools/wpt/run.py
@@ -277,6 +277,8 @@ class Chrome(BrowserSetup):
         if kwargs["browser_channel"] == "dev":
             logger.info("Automatically turning on experimental features for Chrome Dev")
             kwargs["binary_args"].append("--enable-experimental-web-platform-features")
+            # HACK(Hexcles): work around https://github.com/web-platform-tests/wpt/issues/16448
+            kwargs["webdriver_args"].append("--disable-build-check")
 
 
 class ChromeAndroid(BrowserSetup):
diff --git a/tests/wpt/web-platform-tests/tools/wpt/tests/test_wpt.py b/tests/wpt/web-platform-tests/tools/wpt/tests/test_wpt.py
index 49d2b8758f7..4685fa7abd2 100644
--- a/tests/wpt/web-platform-tests/tools/wpt/tests/test_wpt.py
+++ b/tests/wpt/web-platform-tests/tools/wpt/tests/test_wpt.py
@@ -102,7 +102,8 @@ def test_list_tests(manifest_dir):
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--metadata", manifest_dir, "--list-tests",
-                       "--yes", "chrome", "/dom/nodes/Element-tagName.html"])
+                       "--channel", "dev", "--yes", "chrome",
+                       "/dom/nodes/Element-tagName.html"])
     assert excinfo.value.code == 0
 
 
@@ -173,12 +174,13 @@ def test_run_zero_tests():
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--no-pause", "--binary-arg", "headless",
-                       "chrome", "/non-existent-dir/non-existent-file.html"])
+                       "--channel", "dev", "chrome",
+                       "/non-existent-dir/non-existent-file.html"])
     assert excinfo.value.code != 0
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--no-pause", "--binary-arg", "headless",
-                       "--no-fail-on-unexpected",
+                       "--no-fail-on-unexpected", "--channel", "dev",
                        "chrome", "/non-existent-dir/non-existent-file.html"])
     assert excinfo.value.code != 0
 
@@ -197,12 +199,12 @@ def test_run_failing_test():
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--no-pause", "--binary-arg", "headless",
-                       "chrome", failing_test])
+                       "--channel", "dev", "chrome", failing_test])
     assert excinfo.value.code != 0
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--no-pause", "--binary-arg", "headless",
-                       "--no-fail-on-unexpected",
+                       "--no-fail-on-unexpected", "--channel", "dev",
                        "chrome", failing_test])
     assert excinfo.value.code == 0
 
@@ -228,14 +230,14 @@ def test_run_verify_unstable(temp_test):
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--verify", "--binary-arg", "headless",
-                       "chrome", unstable_test])
+                       "--channel", "dev", "chrome", unstable_test])
     assert excinfo.value.code != 0
 
     stable_test = temp_test("test(function() {}, 'my test');")
 
     with pytest.raises(SystemExit) as excinfo:
         wpt.main(argv=["run", "--yes", "--verify", "--binary-arg", "headless",
-                       "chrome", stable_test])
+                       "--channel", "dev", "chrome", stable_test])
     assert excinfo.value.code == 0
 
 
diff --git a/tests/wpt/web-platform-tests/wake-lock/wakelock-disabled-by-feature-policy.https.sub.html b/tests/wpt/web-platform-tests/wake-lock/wakelock-disabled-by-feature-policy.https.sub.html
index 75064767cee..ad7eeb075f4 100644
--- a/tests/wpt/web-platform-tests/wake-lock/wakelock-disabled-by-feature-policy.https.sub.html
+++ b/tests/wpt/web-platform-tests/wake-lock/wakelock-disabled-by-feature-policy.https.sub.html
@@ -12,7 +12,7 @@
     "https://{{domains[www]}}:{{ports[https][0]}}" + same_origin_src;
 
   promise_test(t => {
-    return promise_rejects(t, "SecurityError", navigator.getWakeLock("screen"));
+    return promise_rejects(t, "NotAllowedError", navigator.getWakeLock("screen"));
   }, 'Feature-Policy header {"wake-lock" : []} disallows the top-level document.');
 
   async_test(t => {
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-method-chaining.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-method-chaining.html
index 4163a8439cd..5703a2a6c7f 100644
--- a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-method-chaining.html
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-method-chaining.html
@@ -91,8 +91,9 @@
             context, should,
             {name: 'MediaElementSource', args: [mediaElement]});
 
-        testConnectMethod(context, should, {name: 'MediaStreamDestination'});
-
+        // MediaStreamAudioDestinationNode has no output so it connect method
+        // chaining isn't possible.
+        
         // MediaStreamSourceNode requires 'stream' object to be constructed,
         // which is a part of MediaStreamDestinationNode.
         let streamDestination = context.createMediaStreamDestination();
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioparam-interface/event-insertion.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioparam-interface/event-insertion.html
index 07a54c3bbf6..2eef895c8e8 100644
--- a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioparam-interface/event-insertion.html
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioparam-interface/event-insertion.html
@@ -211,6 +211,31 @@
                 .then(() => task.done());
           });
 
+      audit.define(
+          {
+            label: 'Multiple linear ramps at the same time',
+            description: 'Verify output'
+          },
+          (task, should) => {
+            testMultipleSameEvents(should, {
+              method: 'linearRampToValueAtTime',
+              prefix: 'Multiple linear ramps: ',
+              threshold: 0
+            }).then(() => task.done());
+          });
+
+      audit.define(
+          {
+            label: 'Multiple exponential ramps at the same time',
+            description: 'Verify output'
+          },
+          (task, should) => {
+            testMultipleSameEvents(should, {
+              method: 'exponentialRampToValueAtTime',
+              prefix: 'Multiple exponential ramps: ',
+              threshold: 5.3924e-7
+            }).then(() => task.done());
+          });
 
       audit.run();
 
@@ -297,6 +322,71 @@
         };
       }
 
+      // Test output when two events of the same time are scheduled at the same
+      // time.
+      function testMultipleSameEvents(should, options) {
+        let {method, prefix, threshold} = options;
+
+        // Context for testing.
+        let context =
+            new OfflineAudioContext({length: 16384, sampleRate: sampleRate});
+
+        let src = new ConstantSourceNode(context);
+        src.connect(context.destination);
+
+        let initialValue = 1;
+
+        // Informative print
+        should(() => {
+          src.offset.setValueAtTime(initialValue, 0);
+        }, prefix + `setValueAtTime(${initialValue}, 0)`).notThrow();
+
+        let frame = 64;
+        let time = frame / context.sampleRate;
+        let values = [2, 7, 10];
+
+        // Schedule two events of the same type at the same time, but with
+        // different values.
+
+        values.forEach(value => {
+          // Informative prints to show what we're doing in this test.
+          should(
+              () => {
+                src.offset[method](value, time);
+              },
+              prefix +
+                  eventToString(
+                      method,
+                      value,
+                      time,
+                      ))
+              .notThrow();
+        })
+
+        src.start();
+
+        return context.startRendering().then(audioBuffer => {
+          let actual = audioBuffer.getChannelData(0);
+
+          // The output should be a ramp from time 0 to the event time.  But we
+          // only verify the value just before the event time, which should be
+          // fairly close to values[0].  (But compute the actual expected value
+          // to be sure.)
+          let expected = methodMap[method](
+              (frame - 1) / context.sampleRate, initialValue, 0, values[0],
+              time);
+          should(actual[frame - 1], prefix + `Output at frame ${frame - 1}`)
+              .beCloseTo(expected, {threshold: threshold, precision: 3});
+
+          // Any other values shouldn't show up in the output.  Only the value
+          // from last event should appear.  We only check the value at the
+          // event time.
+          should(
+              actual[frame], prefix + `Output at frame ${frame} (${time} sec)`)
+              .beEqualTo(values[values.length - 1]);
+        });
+      }
+
       // Convert an automation method to a string for printing.
       function eventToString(method, value, time, extras) {
         let string = method + '(';
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-biquadfilternode-interface/biquad-getFrequencyResponse.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-biquadfilternode-interface/biquad-getFrequencyResponse.html
index 2389b334fb8..23222e4df96 100644
--- a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-biquadfilternode-interface/biquad-getFrequencyResponse.html
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-biquadfilternode-interface/biquad-getFrequencyResponse.html
@@ -36,12 +36,6 @@
       let filterQ = 1;
       let filterGain = 5;  // Decibels.
 
-      // The maximum allowed error in the magnitude response.
-      let maxAllowedMagError = 1.09931e-6;
-
-      // The maximum allowed error in the phase response.
-      let maxAllowedPhaseError = 6.4724e-8;
-
       // The magnitudes and phases of the reference frequency response.
       let expectedMagnitudes;
       let expectedPhases;
@@ -148,6 +142,10 @@
         }
       }
 
+      function decibelsToLinear(x) {
+        return Math.pow(10, x/20);
+      }
+
       // Look through the array and find any NaN or infinity. Returns the index
       // of the first occurence or -1 if none.
       function findBadNumber(signal) {
@@ -171,8 +169,17 @@
       }
 
       // Compare the frequency response with our expected response.
+      //
+      //   should - The |should| method provided by audit.define
+      //   filter - The filter node used in the test
+      //   frequencies - array of frequencies provided to |getFrequencyResponse|
+      //   magResponse - mag response from |getFrequencyResponse|
+      //   phaseResponse - phase response from |getFrequencyResponse|
+      //   maxAllowedMagError - error threshold for mag response, in dB
+      //   maxAllowedPhaseError - error threshold for phase response, in rad.
       function compareResponses(
-          should, filter, frequencies, magResponse, phaseResponse) {
+          should, filter, frequencies, magResponse, phaseResponse,
+          maxAllowedMagError, maxAllowedPhaseError) {
         let expectedResponse = frequencyResponseReference(filter, frequencies);
 
         expectedMagnitudes = expectedResponse.magnitudes;
@@ -188,16 +195,19 @@
         let hasBadNumber;
 
         hasBadNumber = findBadNumber(magResponse);
-        badResponse = !should(
-                           hasBadNumber >= 0 ? 1 : 0,
-                           'Number of non-finite values in magnitude response')
-                           .beEqualTo(0);
+        badResponse =
+            !should(
+                 hasBadNumber >= 0 ? 1 : 0,
+                 filter.type +
+                     ': Number of non-finite values in magnitude response')
+                 .beEqualTo(0);
 
         hasBadNumber = findBadNumber(phaseResponse);
-        badResponse = !should(
-                           hasBadNumber >= 0 ? 1 : 0,
-                           'Number of non-finte values in phase response')
-                           .beEqualTo(0);
+        badResponse =
+            !should(
+                 hasBadNumber >= 0 ? 1 : 0,
+                 filter.type + ': Number of non-finte values in phase response')
+                 .beEqualTo(0);
 
         // These aren't testing the implementation itself.  Instead, these are
         // sanity checks on the reference.  Failure here does not imply an error
@@ -206,14 +216,16 @@
         badResponse =
             !should(
                  hasBadNumber >= 0 ? 1 : 0,
-                 'Number of non-finite values in the expected magnitude response')
+                 filter.type +
+                     ': Number of non-finite values in the expected magnitude response')
                  .beEqualTo(0);
 
         hasBadNumber = findBadNumber(expectedPhases);
         badResponse =
             !should(
                  hasBadNumber >= 0 ? 1 : 0,
-                 'Number of non-finite values in expected phase response')
+                 filter.type +
+                     ': Number of non-finite values in expected phase response')
                  .beEqualTo(0);
 
         // If we found a NaN or infinity, the following tests aren't very
@@ -221,7 +233,8 @@
         // warning message.
         should(
             !badResponse,
-            'Actual and expected results contained only finite values')
+            filter.type +
+                ': Actual and expected results contained only finite values')
             .beTrue();
 
         for (k = 0; k < n; ++k) {
@@ -236,7 +249,7 @@
 
         should(
             linearToDecibels(maxMagError),
-            'Max error (' + linearToDecibels(maxMagError) +
+            filter.type + ': Max error (' + linearToDecibels(maxMagError) +
                 ' dB) of magnitude response at frequency ' +
                 frequencies[maxMagErrorIndex] + ' Hz')
             .beLessThanOrEqualTo(linearToDecibels(maxAllowedMagError));
@@ -254,7 +267,7 @@
 
         should(
             radToDegree(maxPhaseError),
-            'Max error (' + radToDegree(maxPhaseError) +
+            filter.type + ': Max error (' + radToDegree(maxPhaseError) +
                 ' deg) in phase response at frequency ' +
                 frequencies[maxPhaseErrorIndex] + ' Hz')
             .beLessThanOrEqualTo(radToDegree(maxAllowedPhaseError));
@@ -265,32 +278,78 @@
         return rad * 180 / Math.PI;
       }
 
-      audit.define(
-          {label: 'test', description: 'Biquad frequency response'},
-          function(task, should) {
-            context = new AudioContext();
+      // Test the getFrequencyResponse for each of filter types.  Each entry in
+      // this array is a dictionary with these elements:
+      //
+      //   type:  filter type to be tested
+      //   maxErrorInMagnitude:  Allowed error in computed magnitude response
+      //   maxErrorInPhase:      Allowed error in computed magnitude phase
+      [{
+        type: 'lowpass',
+        maxErrorInMagnitude: decibelsToLinear(-73.0178),
+        maxErrorInPhase: 8.04360e-6
+      },
+       {
+         type: 'highpass',
+         maxErrorInMagnitude: decibelsToLinear(-117.5461),
+         maxErrorInPhase: 6.9691e-6
+       },
+       {
+         type: 'bandpass',
+         maxErrorInMagnitude: decibelsToLinear(-79.0139),
+         maxErrorInPhase: 4.9371e-6
+       },
+       {
+         type: 'lowshelf',
+         maxErrorInMagnitude: decibelsToLinear(-120.4038),
+         maxErrorInPhase: 4.0724e-6
+       },
+       {
+         type: 'highshelf',
+         maxErrorInMagnitude: decibelsToLinear(-120, 1303),
+         maxErrorInPhase: 4.0724e-6
+       },
+       {
+         type: 'peaking',
+         maxErrorInMagnitude: decibelsToLinear(-119.1176),
+         maxErrorInPhase: 6.4724e-8
+       },
+       {
+         type: 'notch',
+         maxErrorInMagnitude: decibelsToLinear(-87.0808),
+         maxErrorInPhase: 6.6300e-6
+       },
+       {
+         type: 'allpass',
+         maxErrorInMagnitude: decibelsToLinear(-265.3517),
+         maxErrorInPhase: 1.3260e-5
+       }].forEach(test => {
+        audit.define(
+            {label: test.type, description: 'Frequency response'},
+            (task, should) => {
+              let context = new AudioContext();
 
-            filter = context.createBiquadFilter();
+              let filter = new BiquadFilterNode(context, {
+                type: test.type,
+                frequency: filterCutoff,
+                Q: filterQ,
+                gain: filterGain
+              });
 
-            // Arbitrarily test a peaking filter, but any kind of filter can be
-            // tested.
-            filter.type = 'peaking';
-            filter.frequency.value = filterCutoff;
-            filter.Q.value = filterQ;
-            filter.gain.value = filterGain;
+              let frequencies =
+                  createFrequencies(numberOfFrequencies, context.sampleRate);
+              magResponse = new Float32Array(numberOfFrequencies);
+              phaseResponse = new Float32Array(numberOfFrequencies);
 
-            let frequencies =
-                createFrequencies(numberOfFrequencies, context.sampleRate);
-            magResponse = new Float32Array(numberOfFrequencies);
-            phaseResponse = new Float32Array(numberOfFrequencies);
+              filter.getFrequencyResponse(
+                  frequencies, magResponse, phaseResponse);
+              compareResponses(
+                  should, filter, frequencies, magResponse, phaseResponse,
+                  test.maxErrorInMagnitude, test.maxErrorInPhase);
 
-            filter.getFrequencyResponse(
-                frequencies, magResponse, phaseResponse);
-            compareResponses(
-                should, filter, frequencies, magResponse, phaseResponse);
-
-            task.done();
-          });
+              task.done();
+            });
+      });
 
       audit.define(
           {
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html
new file mode 100644
index 00000000000..c1686da9645
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-convolvernode-interface/realtime-conv.html
@@ -0,0 +1,149 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      Test Convolver on Real-time Context
+    </title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit-util.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+    <script src="/webaudio/resources/convolution-testing.js"></script>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      const audit = Audit.createTaskRunner();
+      // Choose a length that is larger enough to cause multiple threads to be
+      // used in the convolver.  For browsers that don't support this, this
+      // value doesn't matter.
+      const pulseLength = 16384;
+
+      // The computed SNR should be at least this large.  This value depends on
+      // teh platform and browser.  Don't set this value to be to much lower
+      // than this. It probably indicates a fairly inaccurate convolver or
+      // constant source node automations that should be fixed instead.
+      const minRequiredSNR = 88.457;
+
+      // To test the real-time convolver, we convolve two square pulses together
+      // to produce a triangular pulse.  To verify the result is correct we
+      // compare it against a constant source node configured to generate the
+      // expected ramp.
+      audit.define(
+          {label: 'test', description: 'Test convolver with real-time context'},
+          (task, should) => {
+            // Use a power of two for the sample rate to eliminate round-off in
+            // computing times from frames.
+            const context = new AudioContext({sampleRate: 16384});
+
+            // Square pulse for the convolver impulse response.
+            const squarePulse = new AudioBuffer(
+                {length: pulseLength, sampleRate: context.sampleRate});
+            squarePulse.getChannelData(0).fill(1);
+
+            const convolver = new ConvolverNode(
+                context, {buffer: squarePulse, disableNormalization: true});
+
+            // Square pulse for testing
+            const srcSquare = new ConstantSourceNode(context, {offset: 0});
+            srcSquare.connect(convolver);
+
+            // Reference ramp.  Automations on this constant source node will
+            // generate the desired ramp.
+            const srcRamp = new ConstantSourceNode(context, {offset: 0});
+
+            // Use these gain nodes to compute the difference between the
+            // convolver output and the expected ramp to create the error
+            // signal.
+            const inverter = new GainNode(context, {gain: -1});
+            const sum = new GainNode(context, {gain: 1});
+            convolver.connect(sum);
+            srcRamp.connect(inverter).connect(sum);
+
+            // Square the error signal using this gain node.
+            const squarer = new GainNode(context, {gain: 0});
+            sum.connect(squarer);
+            sum.connect(squarer.gain);
+
+            // Merge the error signal and the square source so we can integrate
+            // the error signal to find an SNR.
+            const merger = new ChannelMergerNode(context, {numberOfInputs: 2});
+
+            squarer.connect(merger, 0, 0);
+            srcSquare.connect(merger, 0, 1);
+
+            // For simplicity, use a ScriptProcessor to integrate the error
+            // signal. The square pulse signal is used as a gate over which the
+            // integration is done.  When the pulse ends, the SNR is computed
+            // and the test ends.
+
+            // |doSum| is used to determine when to integrate and when it
+            // becomes false, it signals the end of integration.
+            let doSum = false;
+
+            // |signalSum| is the energy in the square pulse.  |errorSum| is the
+            // energy in the error signal.
+            let signalSum = 0;
+            let errorSum = 0;
+
+            let spn = context.createScriptProcessor(0, 2, 1);
+            spn.onaudioprocess = (event) => {
+              // Sum the values on the first channel when the second channel is
+              // not zero.  When the second channel goes from non-zero to 0,
+              // dump the value out and terminate the test.
+              let c0 = event.inputBuffer.getChannelData(0);
+              let c1 = event.inputBuffer.getChannelData(1);
+
+              for (let k = 0; k < c1.length; ++k) {
+                if (c1[k] == 0) {
+                  if (doSum) {
+                    doSum = false;
+                    // Square wave is now silent and we were integration, so we
+                    // can stop now and verify the SNR.
+                    should(10 * Math.log10(signalSum / errorSum), 'SNR')
+                        .beGreaterThanOrEqualTo(minRequiredSNR);
+                    spn.onaudioprocess = null;
+                    task.done();
+                  }
+                } else {
+                  // Signal is non-zero so sum up the values.
+                  doSum = true;
+                  errorSum += c0[k];
+                  signalSum += c1[k] * c1[k];
+                }
+              }
+            };
+
+            merger.connect(spn).connect(context.destination);
+
+            // Schedule everything to start a bit in the futurefrom now, and end
+            // pulseLength frames later.
+            let now = context.currentTime;
+
+            // |startFrame| is the number of frames to schedule ahead for
+            // testing.
+            const startFrame = 512;
+            const startTime = startFrame / context.sampleRate;
+            const pulseDuration = pulseLength / context.sampleRate;
+
+            // Create a square pulse in the constant source node.
+            srcSquare.offset.setValueAtTime(1, now + startTime);
+            srcSquare.offset.setValueAtTime(0, now + startTime + pulseDuration);
+
+            // Create the reference ramp.
+            srcRamp.offset.setValueAtTime(1, now + startTime);
+            srcRamp.offset.linearRampToValueAtTime(
+                pulseLength,
+                now + startTime + pulseDuration - 1 / context.sampleRate);
+            srcRamp.offset.linearRampToValueAtTime(
+                0,
+                now + startTime + 2 * pulseDuration - 1 / context.sampleRate);
+
+            // Start the ramps!
+            srcRamp.start();
+            srcSquare.start();
+          });
+
+      audit.run();
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html
new file mode 100644
index 00000000000..5d3fd0c26f4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/ctor-mediastreamaudiodestination.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      Test Constructor: MediaStreamAudioDestinationNode
+    </title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit-util.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+    <script src="/webaudio/resources/audionodeoptions.js"></script>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      let context = new AudioContext();
+
+      let audit = Audit.createTaskRunner();
+
+      audit.define('initialize', (task, should) => {
+        // Need AudioContext, not OfflineAudioContext, for these tests.
+        should(() => {
+          context = new AudioContext();
+        }, 'context = new AudioContext()').notThrow();
+        task.done();
+      });
+
+      audit.define('invalid constructor', (task, should) => {
+        testInvalidConstructor(
+            should, 'MediaStreamAudioDestinationNode', context);
+        task.done();
+      });
+
+      audit.define('default constructor', (task, should) => {
+        let prefix = 'node0';
+        let node = testDefaultConstructor(
+            should, 'MediaStreamAudioDestinationNode', context, {
+              prefix: prefix,
+              numberOfInputs: 1,
+              numberOfOutputs: 0,
+              channelCount: 2,
+              channelCountMode: 'explicit',
+              channelInterpretation: 'speakers'
+            });
+
+        testDefaultAttributes(should, node, prefix, []);
+
+        task.done();
+      });
+
+      audit.define('test AudioNodeOptions', (task, should) => {
+        testAudioNodeOptions(
+            should, context, 'MediaStreamAudioDestinationNode', {
+              channelCount: {
+                // An arbitrary but valid, non-default count for this node.
+                value: 7
+              }
+            });
+        task.done();
+      });
+
+      audit.run();
+    </script>
+  </body>
+</html>